Abstract: Nationalism, with three main forms of economic nationalism, technological nationalism and vaccine nationalism, has been increasingly growing and spreading in western countries, posing great risks and challenges to the recovery of world economy and the global fight against COVID-19 pandemic. Meanwhile, it has negative impact on the development of China 's economy, science and technology, and social ideology. The revival and spread of nationalism in western countries result from the interweaving of many factors, such as the systemic crisis in western countries, the ideological manipulation of bourgeoisie and the outward transfer of social contradictions. In response to nationalism in western countries and its policyization, China should adhere to the guidance of Marxism and grasp the essence of western nationalism. In addition to being brave enough to fight and telling China 's story well, it should proceed to build a community with a shared future for mankind, and strengthen the ideological guidance of domestic nationalism.